CN214252697U - Lens module and camera equipment with same - Google Patents

Abstract

The invention discloses a lens module and a camera device with the same, according to the lens module provided by the embodiment of the invention, the lens module comprises a lens barrel, a movable part and an electromagnetic driving assembly, wherein an accommodating space is arranged in the lens barrel; the movable part is used for bearing an image sensor, and the part of the movable part for bearing the image sensor is positioned below the accommodating space; the electromagnetic driving component comprises a coil and a magnetic body, the electromagnetic driving component is arranged on the side face of the movable portion, and the electromagnetic driving component is used for driving the movable portion to move so as to drive the image sensor to move. According to the lens module provided by the embodiment of the invention, the volume of the camera equipment is reduced, the occupied space is small, and the requirements of people on the lightness, thinness, shortness and smallness of the camera module or the camera equipment can be met.

Description

Lens module and camera equipment with same

Technical Field

The invention relates to the technical field of camera equipment, in particular to a lens module and camera equipment with the same.

Background

With the rapid development of multimedia technology, digital cameras, video cameras, tablet computers and mobile phones with cameras are more and more favored by consumers, and in the digital cameras, video cameras, mobile phone cameras and other photographic devices, the lens module is an indispensable component. The lens module generally includes a lens barrel, a lens holder, a lens, a driving device, and an image sensor. The lens is accommodated in the lens barrel, the image sensor is arranged on the lens base, and the driving device adjusts the lens, so that the lens moves relative to the image sensor to realize the focusing or anti-shaking function.

In the conventional focusing or anti-shake lens module, a driving motor or a voice coil motor is used to drive a lens barrel or a lens base to displace, so as to change the distance between a lens and an image sensor, thereby realizing focusing or anti-shake. However, the lens module is not only high in cost, but also needs to reserve a large space for the movement of the lens due to the large size of the lens, so that the size of the lens module is increased, and the requirements of people on the lightness, thinness, shortness and shortness of the camera module or the camera equipment cannot be met. Therefore, it is desirable to provide a focusing or anti-shake lens module with small space occupation.

Disclosure of Invention

The present invention is directed to at least one of the technical problems of the prior art, and therefore, the present invention provides a lens module, which has a small size and a small occupied space, and can satisfy the light, thin, short and small requirements of people for a camera module or a camera device.

The invention also provides a camera device with the lens module.

The lens module according to the embodiment of the first aspect of the invention comprises a lens barrel, a movable part and an electromagnetic driving assembly, wherein an accommodating space is arranged in the lens barrel; the movable part is used for bearing an image sensor, and the part of the movable part for bearing the image sensor is positioned below the accommodating space; the electromagnetic driving component is arranged on the side face of the movable portion and used for driving the movable portion to move so as to drive the image sensor to move.

The lens module according to the embodiment of the invention at least has the following technical effects: be provided with accommodation space in the lens cone, can be used for placing the lens subassembly, the movable part is used for bearing image sensor to the part that is used for bearing image sensor is located the accommodation space below, makes image sensor can be located the bottom of lens subassembly, thereby drives the movable part through the electromagnetic drive subassembly and removes and to adjust the distance or the position relation realization focusing between image sensor and the lens subassembly or anti-shake. The driving force required by the lens module is smaller and the driving is more convenient by driving the image sensor to move instead of driving the lens assembly to move. Meanwhile, the size of the image sensor is small, so that the space reserved for the image sensor by the lens module is small, and the thickness of the lens module in the axial direction can be saved.

According to some embodiments of the lens module of the embodiments of the present invention, the movable portion includes a bearing plate and a side plate, the side plate is disposed on a side surface of the lens barrel, the bearing plate is connected to the side plate and located at a bottom of the accommodating space, and the bearing plate is used for bearing the image sensor; the electromagnetic driving assembly drives the side plate to move so as to drive the bearing plate to move.

According to some embodiments of the lens module of the embodiments of the present invention, the lens module further includes a fixing plate disposed on a side surface of the movable portion, the fixing plate being disposed opposite to the side plate; the electromagnetic driving assembly comprises a coil and a magnetic body, and the coil and the magnetic body are respectively arranged on the fixing plate and the side plate.

According to some embodiments of the lens module, the side plate is provided with a groove, and the coil is embedded in the groove; the magnetic body is arranged on the fixing plate.

According to some embodiments of the lens module, the fixing plate is provided with a groove, and the coil is embedded in the fixing plate; the magnetic body is arranged on the side plate.

According to some embodiments of the lens module of the present invention, the side plate and the fixing plate are provided with sliding grooves which are oppositely arranged, the sliding grooves are enclosed to form a sliding channel, and the sliding channel is provided with balls and/or rollers.

According to some embodiments of the lens module of the present invention, the lens module further includes a bearing, the bearing is disposed between the fixing plate and the side plate, and the side plate is abutted to the fixing plate through the bearing.

According to some embodiments of the lens module of the embodiments of the present invention, the lens module further includes a hall sensor, the hall sensor is disposed on the magnetic body, and the hall sensor is used for sensing a positional relationship between the coil and the magnetic body.

According to some embodiments of the lens module of the embodiments of the present invention, the magnetic body includes a positive magnetic pole and a negative magnetic pole, and the positive magnetic pole and the negative magnetic pole are disposed in a vertical direction.

An image pickup apparatus according to an embodiment of a second aspect of the present invention includes the lens module according to the above-described embodiment of the first aspect of the present invention.

According to the image pickup apparatus of the embodiment of the present invention, at least the following technical effects are obtained: by adopting the lens module, the size of the lens module is reduced, the occupied space is small, and the requirements of people on the lightness, thinness, shortness and smallness of the camera module or the camera equipment can be met.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above-mentioned additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic view of an overall structure of a lens module according to an embodiment of the invention;

FIG. 2 is a schematic view of a combination structure of a lens module fixing plate and a movable portion according to an embodiment of the present invention;

FIG. 3 is a schematic view of a first driving method of a lens module according to an embodiment of the invention;

FIG. 4 is a schematic structural diagram illustrating a second driving method of a lens module according to an embodiment of the invention;

FIG. 5 is a schematic structural diagram illustrating a third driving method of a lens module according to an embodiment of the invention;

FIG. 6 is a schematic structural diagram illustrating a fourth driving method of a lens module according to an embodiment of the present invention;

FIG. 7 is a schematic view of a fifth driving method of a lens module according to an embodiment of the invention;

reference numerals:

the lens barrel 100, the movable part 200, the carrier plate 210, the side plate 220, the sliding groove 221, the ball 230, the ball 240, the bearing 250, the coil 310, the magnetic body 320, the hall sensor 321, the positive pole 322, the negative pole 323, the fixed plate 400, the groove 410, the flexible circuit board 500, and the housing 600.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

A lens module according to an embodiment of the present invention is described below with reference to fig. 1 to 7.

For example, as shown in fig. 2 and 3, a lens module according to an embodiment of the present invention includes a lens barrel 100, a movable portion 200, and an electromagnetic driving assembly, wherein an accommodating space is provided in the lens barrel 100; the movable part 200 is used for bearing the image sensor, and the part of the movable part 200 for bearing the image sensor is positioned below the accommodating space; the electromagnetic driving assembly is disposed on a side surface of the movable portion 200, and the electromagnetic driving assembly is used for driving the movable portion 200 to move so as to drive the image sensor to move.

For example, as shown in fig. 2 and 3, the lens module includes a lens barrel 100, a movable portion 200, and an electromagnetic driving assembly, and a receiving space is provided in the lens barrel 100, and the receiving space is used for placing a lens. The movable portion 200 is used for bearing an image sensor, and a portion bearing the image sensor is located below the accommodating space, and the image sensor is located below the accommodating space, i.e. can receive an image signal transmitted by the lens. The electromagnetic driving assembly is located on the side surface of the movable portion 200, the electromagnetic assembly comprises a coil 310 and a magnetic body 320, one of the coil 310 and the magnetic body 320 is connected with the movable portion 200, the other one is fixedly arranged, the coil 310 is electrified, so that the coil 310 is subjected to Lorentz force in a magnetic field, mutual displacement occurs between the coil 310 and the magnetic body 320, the movable portion 200 can move upwards or downwards by changing the direction of current in the coil 310, and the image sensor is close to or far away from the lens assembly, so that focusing is achieved.

According to the lens module provided by the embodiment of the invention, at least the following beneficial effects can be achieved by the arrangement: the lens barrel 100 is provided with an accommodating space for accommodating a lens assembly, the movable portion 200 is used for bearing an image sensor, and a portion for bearing the image sensor is located below the accommodating space, so that the image sensor can be located at the bottom of the lens assembly, and the movable portion 200 is driven by the driving assembly to move, so that the distance between the image sensor and the lens assembly can be adjusted, and focusing or anti-shake is achieved. The driving force required by the lens module is smaller and the driving is more convenient by driving the image sensor to move instead of driving the lens assembly to move. Meanwhile, the size of the image sensor is small, so that the space reserved for the image sensor by the lens module is small, the thickness of the lens module in the axial direction can be saved, the size of the lens module is small, the occupied space is small, and the requirements of people on the lightness, thinness, shortness and smallness of a camera module or a camera device can be met.

In some embodiments of the present invention, the movable portion 200 includes a bearing plate 210 and a side plate 220, the side plate 220 is disposed on a side surface of the lens barrel 100, the bearing plate 210 is connected to the side plate 220 and located at a bottom of the accommodating space, and the bearing plate 210 is used for bearing an image sensor; the electromagnetic driving assembly drives the side plate 220 to move so as to drive the carrier plate 210 to move.

For example, as shown in fig. 3 to 7, the movable portion 200 includes a side plate 220 and a bearing plate 210, the side plate 220 is disposed at a side surface of the lens barrel 100, the bearing plate 210 is connected to the side plate 220 and located at a bottom of the accommodating space, and the bearing plate 210 is used for bearing the image sensor, so that the image sensor is located at the bottom of the lens assembly. The bearing plate 210 is connected with the side plate 220, the electromagnetic driving assembly drives the bearing plate 210 to move through driving the side plate 220, and the bearing plate 210 moves to drive the image sensor to move together, so that the position between the image sensor and the lens assembly is changed, and the focusing effect can be realized. When the electromagnetic driving assembly drives the side plate 220 to move upwards or downwards, the side plate 220 drives the bearing plate 210 to move upwards or downwards, so that the distance between the image sensor and the lens assembly is close to or far away from the image sensor, and focusing is realized.

In some embodiments of the present invention, the lens module further includes a fixing plate 400, the fixing plate 400 is disposed on a side surface of the movable portion 200, and the fixing plate 400 is disposed opposite to the side plate 220; the electromagnetic driving assembly includes a coil 310 and a magnetic body 320, and both the coil 310 and the magnetic body 320 of the electromagnetic driving assembly are respectively disposed on the fixing plate 400 and the side plate 220.

For example, as shown in fig. 2, the lens module further includes a fixing plate 400, the fixing plate 400 is a frame type and frames the movable portion 200 and the lens barrel 100, the fixing plate 400 is disposed opposite to the side plate 220, and both the coil 310 and the magnetic body 320 of the electromagnetic driving assembly are disposed on the fixing plate 400 and the side plate 220, respectively, i.e., when the coil 310 is disposed on the fixing plate 400, the magnetic body 320 is disposed on the side plate 220, as shown in fig. 3 to 6, and when the coil 310 is disposed on the side plate 220, the magnetic body 320 is disposed on the fixing plate 400, as shown in fig. 7. One of the coil 310 and the magnetic body 320 is fixedly disposed, and the other is fixed with the side plate 220 of the movable portion 200, so that the electromagnetic driving assembly can drive the image sensor to move to achieve focusing.

In some embodiments of the present invention, the side plate 220 is provided with a groove 410, and the coil 310 is embedded in the groove 410; the magnetic body 320 is disposed on the fixed plate 400.

For example, as shown in fig. 7, the side plate 220 is provided with a groove 410, the coil 310 is embedded in the groove 410, and the magnetic body 320 is disposed on the fixing plate 400, so that the coil 310 with a larger volume is embedded in the side plate 220, thereby effectively saving the space in the lens module, increasing the space utilization rate, and reducing the volume of the lens module.

In some embodiments of the present invention, the fixing plate 400 is provided with a groove 410, and the coil 310 is embedded in the fixing plate 400; the magnetic body 320 is disposed on the side plate 220.

For example, as shown in fig. 3 to 6, a groove 410 is formed on the fixing plate 400, the coil 310 is embedded in the fixing plate 400, and the magnetic body 320 is disposed on the side plate 220. Through such setting for the lighter magnetic substance 320 of quality sets up on curb plate 220, thereby drives magnetic substance 320 and curb plate 220 upwards or downwards through coil 310 circular telegram production lorentz force and makes movable part 200 drive image sensor and be close to or keep away from the function that the lens subassembly was focused thereby.

By such an arrangement, the magnetic body 320 having a relatively light weight is disposed on the side plate 220, so that the requirement for the magnitude of the driving force can be reduced, and the movable portion 200 can be driven more easily.

In some embodiments of the present invention, the side plates 220 and the fixing plate 400 are provided with opposite sliding grooves 221, the sliding grooves 221 enclose to form a sliding channel, and the sliding channel is provided with balls 230 and/or rollers 240.

For example, as shown in fig. 2, 3 and 4, the side plate 220 and the fixing plate 400 are provided with sliding grooves 221 which are oppositely arranged, the sliding grooves 221 are enclosed to form a sliding way, and balls 230 and/or rollers 240 are arranged in the sliding way, so that the mutual movement between the movable part 200 and the fixing plate 400 is changed from static friction to dynamic friction, the friction force can be effectively reduced, the movable part 200 is easier to drive and is less prone to wear, and the service life and the precision are increased. And the arrangement of the slide way, the balls 230 and the rollers 240 provides a guide for the movement of the movable portion 200, which limits the direction of the movement of the movable portion 200, so that the movement of the movable portion 200 can be more accurately and easily controlled.

More closely, can also set up the baffle on the lens module, the baffle setting prevents ball 230 or roller 240 roll-off from the slide in, and the baffle can carry out certain limiting action to the removal of movable part 200 simultaneously, prevents that the displacement of movable part 200 is too big, plays certain limiting displacement.

In some embodiments of the present invention, the lens module further includes a bearing 250, the bearing 250 is disposed between the fixing plate 400 and the side plate 220, and the side plate 220 abuts against the fixing plate 400 through the bearing 250.

For example, as shown in fig. 5, the lens module further includes a bearing 250, the bearing 250 is disposed between the fixing plate 400 and the side plate 220, the side plate 220 is abutted against the fixing plate 400 through the bearing 250, and the bearing 250 may be a flat rolling bearing 250.

Through the setting of bearing 250 for the mutual displacement between curb plate 220 and the fixed plate 400 becomes dynamic friction by static friction, can effectively reduce frictional force, makes the movable part 200 drive more easily, and the setting of bearing 250 is simpler, need not process fixed plate 400 or curb plate 220 again and offers spout 221. And the width of the bearing 250 is smaller, the distance between the side wall of the lens barrel 100 and the side plate 220 is not increased, the volume of the image pickup apparatus is not increased, and the cost is further reduced.

In the embodiment of using the balls 230 and/or the balls 230 to change the mutual movement between the side plate 220 and the side wall of the lens barrel 100 from static friction to dynamic friction, and in the embodiment of arranging the bearings 250 between the side plate 220 and the fixing plate 400 to change the mutual movement between the side plate 220 and the side wall of the lens barrel 100 from static friction to dynamic friction, two rows of sliding ways and two rows of bearings 250 are arranged in both embodiments, and actually, the two ways can be used alternatively or simultaneously and are within the protection scope of the present invention. For example, in the embodiment shown in fig. 6, both the slide ball 230 and the bearing 250 are used, and the slide ball 230 is engaged with the side plate 220 on one side and the bearing 250 is used on the other side. Through the arrangement mode, the cost can be reduced, the structure is simplified, and a moving track is provided for the mutual movement between the side plate 220 and the side wall of the lens, so that the movable part 200 has a certain moving track, the movement is more accurate, and the control is more convenient.

Further, magnetic members are embedded in the side plates 220 and the fixing plate 400, the side plates 220 and the fixing plate 400 can be abutted against each other by magnetic force of the magnetic members, and the side plates 220 and the side walls of the lens barrel 100 can move relative to each other by the balls 230, the rollers 240 or the bearings 250. The side plate 220 is tightly attached to the side wall of the lens barrel 100 by the magnetic force of the magnetic member, and the driving assembly is mounted on the outer side wall of the lens barrel 100, so that the driving assembly can conveniently drive the movable portion 200.

In some embodiments of the present invention, the lens module further includes a hall sensor 321, the hall sensor 321 is disposed on the magnetic body 320, and the hall sensor 321 is used for sensing a position relationship between the coil 310 and the magnetic body 320.

For example, as shown in fig. 3 and 4, the lens module further includes a hall sensor 321, the hall sensor 321 is disposed on the magnetic body 320, and the hall sensor 321 is used for sensing a position relationship between the coil 310 and the magnetic body 320. The hall sensor 321 can detect the change of the magnetic flux on the coil 310, so as to sense the position relationship between the coil 310 and the magnetic body 320, and facilitate the control of the lens module on the position of the movable part 200.

In some embodiments of the present invention, the magnetic body 320 includes a positive pole 322 and a negative pole 323, and the positive pole 322 and the negative pole 323 are disposed in a vertical direction.

For example, as shown in fig. 3 and 4, the magnetic body 320 includes a positive magnetic pole 322 and a negative magnetic pole 323, the positive magnetic pole 322 and the negative magnetic pole 323 are disposed in a vertical direction, the positive magnetic pole 322 and the negative magnetic pole 323 are disposed up and down, so that the magnetic induction line of the magnetic body 320 can pass through the coil 310, when a current is generated in the coil 310, a lorentz force is generated to move the movable portion 200, and by changing the direction of the current in the coil 310, the movable portion 200 can be moved in an opposite direction.

Further, the lens module further includes a flexible circuit board 500, for example, as shown in fig. 1, fig. 2 and fig. 3, one end of the flexible circuit board 500 is connected to the image sensor, and the other end of the flexible circuit board 500 is used for being connected to a motherboard of the image pickup device, and the image sensor receives the image signal transmitted by the lens assembly, converts the image signal into an electrical signal, and transmits the electrical signal to the motherboard of the image pickup device through the flexible circuit board 500. The position that flexible circuit board 500 is connected with the lens module is the crooked setting of S type for the part that flexible circuit board 500 and image sensor are connected can be followed image sensor and moved together when electromagnetic drive assembly drive movable part 200 reciprocated, and certain length can be reserved for flexible circuit board 500 'S removal to the part that flexible circuit board 500 is the crooked of S type, from not influencing the relation of being connected with camera equipment' S mainboard.

Further, the lens module further includes a housing 600, and the housing 600 frames the fixing plate 400, the movable portion 200, the lens barrel 100, and other components therein.

An image pickup apparatus according to an embodiment of a second aspect of the present invention includes the lens module according to the above-described embodiment of the first aspect of the present invention.

According to the camera equipment provided by the embodiment of the invention, the volume of the camera equipment is reduced by adopting the lens module, the occupied space is small, and the requirements of people on the lightness, thinness, shortness and smallness of the camera module or the camera equipment can be met.

Other configurations and operations of the image pickup apparatus according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail herein.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A lens module, comprising:

a lens barrel (100), wherein an accommodating space is arranged in the lens barrel (100);

a movable part (200), wherein the movable part (200) is used for bearing an image sensor, and the part of the movable part (200) for bearing the image sensor is positioned below the accommodating space;

the electromagnetic driving component is arranged on the side face of the movable portion (200) and used for driving the movable portion (200) to move so as to drive the image sensor to move.

2. The lens module as claimed in claim 1, wherein the movable portion (200) comprises a bearing plate (210) and a side plate (220), the side plate (220) is disposed on a side surface of the lens barrel (100), the bearing plate (210) is connected to the side plate (220) and located at a bottom of the accommodating space, and the bearing plate (210) is used for bearing the image sensor; the electromagnetic driving component drives the side plate (220) to move so as to drive the bearing plate (210) to move.

3. The lens module as claimed in claim 2, further comprising a fixing plate (400), wherein the fixing plate (400) is disposed on a side surface of the movable portion (200), and the fixing plate (400) is disposed opposite to the side plate (220); the electromagnetic driving assembly comprises a coil (310) and a magnetic body (320), wherein the coil (310) and the magnetic body (320) are respectively arranged on the fixing plate (400) and the side plate (220).

4. The lens module as claimed in claim 3, wherein the side plate (220) has a groove (410), and the coil (310) is embedded in the groove (410); the magnetic body (320) is disposed on the fixing plate (400).

5. The lens module as claimed in claim 3, wherein the fixing plate (400) has a groove (410), and the coil (310) is embedded in the fixing plate (400); the magnetic body (320) is disposed on the side plate (220).

6. The lens module as claimed in claim 3, wherein the side plate (220) and the fixing plate (400) are provided with opposite sliding grooves (221), the sliding grooves (221) enclose to form a slideway, and the slideway is provided with balls (230) and/or rollers (240).

7. The lens module as claimed in claim 3, further comprising a bearing (250), wherein the bearing (250) is disposed between the fixing plate (400) and the side plate (220), and the side plate (220) abuts against the fixing plate (400) through the bearing (250).

8. The lens module as claimed in claim 3, further comprising a Hall sensor (321), wherein the Hall sensor (321) is disposed on the magnetic body (320), and the Hall sensor (321) is used for sensing a positional relationship between the coil (310) and the magnetic body (320).

9. The lens module as claimed in claim 3, wherein the magnetic body (320) comprises a positive magnetic pole (322) and a negative magnetic pole (323), and the positive magnetic pole (322) and the negative magnetic pole (323) are arranged in a vertical direction.

10. An image pickup apparatus characterized by comprising the lens module according to any one of claims 1 to 9.

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